US7249652B2 - Fluid guideline, especially in the form of a tube for taking up untreated air in an air filter of a motor vehicle - Google Patents

Fluid guideline, especially in the form of a tube for taking up untreated air in an air filter of a motor vehicle Download PDF

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Publication number
US7249652B2
US7249652B2 US10/489,013 US48901304A US7249652B2 US 7249652 B2 US7249652 B2 US 7249652B2 US 48901304 A US48901304 A US 48901304A US 7249652 B2 US7249652 B2 US 7249652B2
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United States
Prior art keywords
fluid
guideline
region
structural elements
stable
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Expired - Fee Related, expires
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US10/489,013
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English (en)
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US20040262076A1 (en
Inventor
Anton Wolf
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Woco Industrietechnik GmbH
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Woco Industrietechnik GmbH
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Assigned to WOCO INDUSTRIETECHNIK GMBH reassignment WOCO INDUSTRIETECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WOLF, ANTON
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10137—Flexible ducts, e.g. bellows or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10334—Foams; Fabrics; Porous media; Laminates; Ceramics; Coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1238—Flow throttling or guiding by using secondary connections to the ambient, e.g. covered by a membrane or a porous member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0475—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Definitions

  • the invention concerns a fluid guideline with at least two structural elements made of substantially soundproof material and at least one opening for noise damping, whereby an impedance change (in particular in the form of an impedance discontinuity) of the flow resistance of the fluid flowing through the fluid guideline is present between two adjacent structural elements.
  • tubes for untreated air that are installed in engine compartments of motor vehicles in order to take up or, respectively, to guide surrounding air from the radiator to an air filter, one makes an effort on the production side to reduce the prevalent sound level during the motor operation.
  • Technically refined resonators should filter out as broad a spectrum of noise as possible and can be detuned, while bypass paths can optionally be connected or, respectively, separated by valve controls.
  • resonators require some space (in places they comprise a volume of some liters) and bypass tubes also increase the amount of material due to a length of up to 30 cm.
  • bypass tubes In the continuous search for simple and effective noise-reducing tubes for untreated air, the use of porous materials in the processing of untreated air is also under discussion.
  • JP 60050265 a sintered, porous pipe socket made of aluminum powder is known that is connected via a tube piece with an air filter.
  • the porous, permeable pipe socket thereby characterizes itself by a substantially reduced sound level with consistent air supply efficiency.
  • the pipe socket has the disadvantage of higher material costs.
  • EP 0 837 238 A2 discloses the use of a porous, malleable, sound-absorbing material with which the air filter or its supply line can be lined internally. An additionally lined inner wall likewise leads to an increased expenditure of additional costs.
  • a porous band material to produce a tube is known from EP 818 648 B1.
  • a band is thereby coiled in the shape of a tube as well as glued in the form of a tube and used for sound damping in the air tube in the engine compartment.
  • a woven synthetic is used as a porous material, whereby in addition to the actual shaping treatment process, the production of the woven band is additionally expensive.
  • Openings for noise damping used with impedance changes are known in the prior art.
  • a line section is known from WO 00/45044 that is assembled from two shells connected with one another, whereby gaps are arranged in the interstices between the shells for damping.
  • the line section exhibits a diffuser effect and the tube wall can be provided with bores.
  • the known line section is very complex in assembly.
  • a constriction reducing the diameter of a tube is provided at a perforation of the tubes to suppress the generation of harmonic tones by sound damping for pulsing gases, in particular for exhaust gas from internal combustion engines, with separation from the perforation. This leads to a relatively complicated assembly.
  • a fluid guideline according to species is known from GB 2 364 352.
  • straight, stiff elements are perforated with openings and respectively arranged between flexible elements, whereby the flexible elements can be fashioned as a type of corrugated tube section.
  • the introduction of openings in the straight elements must thereby ensue in adaptation with the geometry of aforesaid elements (which is relatively time-consuming and expensive) in order to generate a desired sound damping.
  • the at least one opening is arranged in the region of the impedance change between two adjacent structural elements.
  • a plurality of openings are arranged along the circumference of the fluid guideline, and/or each opening is fashioned substantially as a rectangle.
  • the total area of the opening or, respectively, openings corresponds substantially to the cross sectional area of the fluid guideline, in particular in the region of its air up-take or its air venting.
  • each opening is stamped or punched and may be covered with an open-pored, porous protective fabric.
  • the structural elements are produced from a synthetic, in particular polypropylene, preferably in one piece by an injection or blow molding process.
  • the protective fabric is a synthetic non-woven material, in particular made of polypropylene, whereby the protective fabric is preferably glued or bonded with the structural elements.
  • the structural elements comprise a corrugated sheathing element between two substantially form-stable regions, whereby preferably at least one opening is respectively arranged between the one substantially form-stable region and the corrugated sheathing element on the one hand and the corrugated sheathing element and the other substantially form-stable region on the other hand.
  • the one substantially form-stable region is connected or molded with a radiator connection socket, and/or the other substantially form-stable region is connected or molded with an air filter connection socket, for assembly in the engine compartment of a motor vehicle.
  • an inventive device is characterized by at least one curve, preferably in the one substantially form-stable region, and/or at least one recess, preferably in the other substantially form-stable region.
  • the invention thus is based on the perception that openings in the wall of a tube for untreated air mounted, for example, in the engine compartment of a motor vehicle between the radiator and an air filter (in particular before and after structural elements integrated into the tube for untreated air), at which an impedance change of the flow resistance ensues, substantially contribute to lowering the sound level ensuing during the motor operation, foremost the noise at uptake of untreated air (thus at the radiator).
  • a tube for untreated air is substantially a ⁇ /4 resonator in which sound damping via reflection and/or interference ensues via the inventive application of the openings.
  • the diameter of the openings presents substantially a compromise solution between a maximization of the flow resistance on the one hand and a minimization of the acoustic resistance on the other hand. It has been inventively established that the aforementioned compromise solution exists when the surface area of the openings is substantially on the order of the cross-sectional surface area of the tube for untreated air, in particular in the range of its outlet.
  • the structural elements of the sheathing hose for untreated air in particular in the form of a corrugated tube or sheathing element between two substantially form-stable regions, are made for production reasons from a synthetic such as polypropylene, as one piece by a blow-molded operation and the openings can simply be stamped. Furthermore, it is advantageous for the production to bond the protective material of the openings to the structural elements. Overall, a tube for untreated air that is cost-effective and exceedingly effective in damping thus occurs.
  • FIG. 1 is an exemplary embodiment of an inventive tube for untreated air in a perspective side view
  • FIG. 2 is a graph of a frequency-dependent damping.
  • FIG. 1 shows an inventive tube 100 for untreated air as it can be applied between a radiator and an air filter (respectively not shown).
  • the tube 100 for untreated air (for example, fashioned from a synthetic material) comprises a flexible corrugated tube or sheathing hose 8 between regions 20 , 30 (that are substantially soundproof as well as form-stable) at whose respective ends 4 , 5 are a radiator connection nozzle 6 or, respectively, an air filter connection nozzle 7 .
  • the form-stable region 20 facing the air filter connection socket 7 is additionally shaped by a curve 9
  • the opposite form-stable region 30 facing the radiator connection socket 6 comprises a recess 10 to facilitate the final assembly in the engine compartment (not shown) of the motor vehicle.
  • Substantially rectangular openings 11 , 11 ′ that are fashioned circumferentially are located on both ends of the corrugated tube 8 .
  • the surface area of the openings 11 , 11 ′ corresponds approximately to the opening area (not shown) of the air filter connection socket 7 and are arranged within via adhesive zones 12 , 12 ′, which have adhesive applied to the surface for mounting an air permeable non-woven material.
  • Each adhesive zone 12 , 12 ′ serves to prevent penetration of dirt particles into the tube 100 for untreated air, in that an air-permeable non-woven material is applied over the openings 11 , 11 ′ and is held by the adhesive applied by means of adhesive wheels (both not shown) in the region of the adhesive zone 12 , 12 ′.
  • This non-woven material which likewise can be fashioned from a synthetic, can alternatively be bonded with the walls of the tube for untreated air.
  • the damping of the opening noise for example the noise at the end of the tube for untreated air (thus the end 4 of the radiator connection socket 6 ) is comparatively plotted against excitation frequencies for three different types of tubes for untreated air.
  • the curve 1 represents the acoustic behavior of a tube for untreated air that comprises a corrugated tube or sheathing element but with no porous walls, and in addition that is fashioned from synthetic, as is mostly typical in the prior art.
  • the curve 2 represents the acoustic behavior of a flexible sheathing hose for untreated air that was produced corresponding to the method disclosed in EP 0 818 648 B1.
  • the curve 3 represents the acoustic behavior of an inventive tube 100 for untreated air. Via a comparison of the three curves with one another, the more effective sound damping of the inventive tube 100 for untreated air with regard to the tubes for untreated air known from the prior art is clearly to be learned from FIG. 2 .

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Fluid Mechanics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Pipe Accessories (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Filtering Materials (AREA)
US10/489,013 2001-09-12 2002-09-11 Fluid guideline, especially in the form of a tube for taking up untreated air in an air filter of a motor vehicle Expired - Fee Related US7249652B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10144972.0 2001-09-12
DE10144972A DE10144972C1 (de) 2001-09-12 2001-09-12 Fluidführung, insbesondere in Form eines Rohluftschlauchs zum Einsaugen von Rohluft in einen Luftfilter eines Kraftfahrzeuges
PCT/EP2002/010204 WO2003023217A1 (de) 2001-09-12 2002-09-11 Fluiführung, insbesondere in form eines rohluftschlauchs zum einsaugen von rohluft in einen luftfilter eines kraftfahrzeugs

Publications (2)

Publication Number Publication Date
US20040262076A1 US20040262076A1 (en) 2004-12-30
US7249652B2 true US7249652B2 (en) 2007-07-31

Family

ID=7698801

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Application Number Title Priority Date Filing Date
US10/489,013 Expired - Fee Related US7249652B2 (en) 2001-09-12 2002-09-11 Fluid guideline, especially in the form of a tube for taking up untreated air in an air filter of a motor vehicle

Country Status (4)

Country Link
US (1) US7249652B2 (de)
EP (1) EP1425505B1 (de)
DE (2) DE10144972C1 (de)
WO (1) WO2003023217A1 (de)

Cited By (8)

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US20080236163A1 (en) * 2006-11-17 2008-10-02 Elringklinger Ag And Veritas Ag Assembly, comprising an exhaust gas turbocharger, an intercooler and a charge-air line
US20150197313A1 (en) * 2014-01-10 2015-07-16 Polaris Industries Inc. Snowmobile
US20160238175A1 (en) * 2015-02-17 2016-08-18 Röchling Automotive SE & Co. KG Fluid line assembly
US9809195B2 (en) 2008-10-10 2017-11-07 Polaris Industries Inc. Snowmobile
US9845004B2 (en) 2014-01-10 2017-12-19 Polaris Industries Inc. Snowmobile
US10493846B2 (en) 2007-05-16 2019-12-03 Polaris Industries Inc. All terrain vehicle
US10793181B2 (en) 2018-02-13 2020-10-06 Polaris Industries Inc. All-terrain vehicle
US11505263B2 (en) 2012-02-09 2022-11-22 Polaris Industries Inc. Snowmobile

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DE202004003141U1 (de) * 2004-03-01 2004-06-17 Rational Ag Schallgedämpftes Brennersystem für ein Gargerät und Gargerät mit solch einem Brennersystem
DE202006003137U1 (de) * 2006-02-24 2007-07-12 Mann+Hummel Gmbh Filterrohrleitung
DE102006040980B4 (de) * 2006-08-31 2009-04-02 Heinrich Gillet Gmbh Körperschallsenkende Vorrichtung
JP2008231979A (ja) * 2007-03-19 2008-10-02 Roki Co Ltd 消音チャンバーダクト
JP4771546B2 (ja) * 2007-03-22 2011-09-14 株式会社Ｒｏｋｉ 消音ダクト
US20080236938A1 (en) * 2007-03-30 2008-10-02 Siemens Vdo Automotive, Inc. Induction system duct with noise attenuating holes
FR2921123B1 (fr) * 2007-09-17 2015-06-19 Mark Iv Systemes Moteurs Sa Circuit de refroidissement des gaz d'alimentation propulses par un turbocompresseur
JP4396753B2 (ja) * 2007-10-03 2010-01-13 株式会社デンソー 冷凍サイクル用消音器
DE202007018075U1 (de) * 2007-12-21 2009-05-14 Mann+Hummel Gmbh Filteranordnung
DE202010005261U1 (de) 2010-04-20 2010-07-01 Lainox Ali S.P.A., Vittorio Veneto Druckausgleicher zur Verbindung des Luftansaugrohrs mit der Muffe eines Ansaugkrümmers für Brenner, und Konvektions- oder Kombi-Gasherd zum Kochen von Lebensmitteln, der mit dieser Vorrichtung ausgestattet ist
DE102014010836B4 (de) * 2014-07-24 2018-12-27 Mann+Hummel Gmbh Fluidrohr einer Fluidleitung eines Kraftfahrzeugs, Kraftfahrzeug und Brennkraftmaschine mit wenigstens einem Fluidrohr
JP6992423B2 (ja) * 2017-11-09 2022-01-13 トヨタ紡織株式会社 内燃機関のインレットダクト

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US3061039A (en) * 1957-11-14 1962-10-30 Joseph J Mascuch Fluid line sound-absorbing structures
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DE10144972C1 (de) 2003-05-15
DE50203102D1 (de) 2005-06-16
WO2003023217A1 (de) 2003-03-20
EP1425505B1 (de) 2005-05-11
EP1425505A1 (de) 2004-06-09
WO2003023217B1 (de) 2004-01-08

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